| Scientific Name | Notes | Rarity Ranks | Common Name |
|---|---|---|---|
| Agoseris heterophylla var. heterophylla | CNPS-EB: C | ||
| Arctostaphylos crustacea subsp. rosei | CNPS-EB: A1 | Rose's manzanita | |
| Montia linearis | (historical-1933) | CNPS-EB: A1x | linear-leaved montia |
| Phacelia divaricata | CNPS-EB: B-PV | divaricate phacelia | |
| Ranunculus occidentalis var. occidentalis | CNPS-EB: B | western buttercup | |
| Streptanthus albidus subsp. peramoenus | CNPS-EB: *A2 State CNPS: 1B.2 Global Rank: G2T2 CNDDB Rank: S2 | most beautiful jewel-flower |